每个正方形下面都有一种颜色，代表一个奖品。
Underneath each square was a color representing a prize.
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在此项研究中，科学家们让猴子从8个正方形中选出一个。每个正方形下面都有一种颜色，代表一个奖品。
During the research, the monkeys were trained to play a game in which they were given a choice of 8 squares to pick from.
每个小矮人都有自身喜欢的一种颜色。
Each of the little man has his favourite colour.
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